Sorption behaviour of maneb in the agriculture soils and its correlation with soil properties

Maneb is a broad spectrum fungicide, often reported as a carcinogenic, teratogenic and neurodegenerative agent. Thus, the occurrence of maneb at non-targeted sites is a cause of concern. The present study investigates adsorption– desorption behaviour of maneb in the agricultural soils to know its fate, mobility and availability in the soil. The sorption study was carried out by batch equilibration procedure. Maneb adsorption followed Langmuir isotherm and was accompanied by increase in manganese content of the soil. Maximum adsorption was observed in soil having the highest clay content. High maneb retention was observed in presence of soils modified with organic matter. The results of this study indicate that the clay and organic matter content of soil have significant influence on sorption behaviour of maneb. Amending soil with organic matter can reduce maneb pollution at non-targeted sites. Keywords— Fungicide, Parkinson disease, Manganese, Organic matter